煤矿采动与地震耦合作用下建筑物灾变分析
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摘要
根据煤矿采动区特有的开采沉陷变形、地震耦合效应和采动区复杂特殊的地质环境条件,从采动损害与震害耦合角度深入分析建筑物灾变过程的演化机制,基于地震工程学和开采沉陷学的原理,建立煤矿采动损害与震害的耦合作用模型和建筑物的运动方程,量化分析了采动区开采沉陷变形和地震对建筑物的损害程度.结果表明:在煤矿采动附加应力作用下,建筑物会产生不同程度的次生损伤;在地震作用下,建筑物的损伤会逐渐积累演化,由此严重威胁到建筑物的整体安全性.
An in-depth analysis of the evolutionary mechanism of catastrophic building failure was conducted by considering the coupled effect of mining subsidence and earthquake in the complex special geological environmental conditions.Based on earthquake engineering and mining subsidence study,the coupling effect model of mining subsidence and earthquake and the motion equation of buildings have been established to allow quantitative analysis of the degree of damage caused by mining subsidence and earthquake.The results show that the seismic dynamic response is obviously different and the different levels of secondary damage of buildings can be produced due to the additional stress caused by mining.Due to seismic loading,the evolution of damage to the buildings will be accumulated gradually,posing a serious threat to the integrity of the entire building.
An in-depth analysis of the evolutionary mechanism of catastrophic building failure was conducted by considering the coupled effect of mining subsidence and earthquake in the complex special geological environmental conditions.Based on earthquake engineering and mining subsidence study,the coupling effect model of mining subsidence and earthquake and the motion equation of buildings have been established to allow quantitative analysis of the degree of damage caused by mining subsidence and earthquake.The results show that the seismic dynamic response is obviously different and the different levels of secondary damage of buildings can be produced due to the additional stress caused by mining.Due to seismic loading,the evolution of damage to the buildings will be accumulated gradually,posing a serious threat to the integrity of the entire building.
引文
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[2]谭志祥,邓喀中.建筑物下采煤研究进展[J].辽宁工程技术大学学报,2006,25(4):485-488.TAN Zhi-xiang,DENG Ka-zhong.Review and expec-tation of study on mining under buildings[J].Journalof Liaoning Technical University,2006,25(4):485-488.
[3]查剑锋,郭广礼,狄丽娟,等.高压输电线路下采煤防护措施探讨[J].矿山压力与顶板管理,2005(1):112-114.ZHA Jian-feng,GUO Guang-li,DI Li-juan,et al.Coalmining protective measures under high tension trans-mission line[J].Journal of Mine Pressure and RoofManagement,2005(1):112-114.
[4]刘松岸.采空区残余曲率变形对多层建筑受力及变形影响研究[D].秦皇岛:燕山大学建筑工程学院,2009:40-66.
[5]夏军武,郭广礼,王守祥,等.框架结构抗变形性能的研究现状和展望[J].东南大学学报:自然科学版,2002,32(增):348-351.XIA Jun-wu,GUO Guang-li,WANG Shou-xiang,etal.Summarize of the anti-deformation function ofFrame construction[J].Journal of Southeast Univer-sity:Natural Science Edition,2002,32(Supp):348-351.
[6]张春礼.采动与地震共同作用下建筑物的破坏过程研究[D].青岛:青岛理工大学土木工程学院,2009.
[7]谭志祥,邓喀中.采动区建筑物地基、基础和结构协同作用力学模型[J].中国矿业大学学报,2004(3):264-267.TAN Zhi-xiang,DENG Ka-zhong.Coordinating actionmodel of ground,foundation and structure of buildingin mining area[J].Journal of China University ofMining&Technology,2004,33(3):264-267.
[8]廖振鹏.工程波动理论导论:第二版[M].北京:科学出版,2002.
[9]刘书贤,刘书会,魏晓刚,等.采动区地震:开采沉陷变形对建筑耦合作用[J].辽宁工程技术大学学报:自然科学版,2011,30(增):92-94.LIU Shu-xian,LIU Shu-hui,WEI Xiao-gang,et al.Coupling mechanism analysis of earthquake and resid-ual deformation of mining subsidence of the buildingin mining area[J].Journal of Liaoning Technical Uni-versity:Natural Science,2011,30(Supp):92-94.
[10]刘书贤,魏晓刚,刘魁星,等.基于隔震技术的采动区半主动双重保护装置减震分析[J].土木工程与管理学报,2011,28(4),1-5.LIU Shu-xian,WEI Xiao-gang,LIU Kui-xing,et al.Seismic response analysis of semi-active device ofdouble protection in mining area based on isolationtechnology[J].Journal of Civil Engineering andManagement,2011,28(4):1-5.
[11]于广云,夏军武,王东权.采动区铁路桥沉陷加固治理[J].中国矿业大学学报,2004,33(1):59-61.YU Guang-yun,XIA Jun-wu,WANG Dong-quan.Reinforcement of railway bridge over mining subsid-ence areas[J].Journal of China University of Min-ing&Technology,2004,33(1):59-61.
[12]DOBRY R,GAZETAS G.Dynamic response of arbi-trarily shaped foundations[J].Geotech J Engrg,ASCE,1986,112(2):109-135.
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